← Resistors in series and parallel lesson New set →

Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 874 · 40 questions
TalentJR

Remember (Add in a row, share side by side): Series: R total = R1 + R2 + R3 … Parallel, equal resistors: R total = R ÷ number of resistors (two equal → half). Then I = V ÷ R total. Example: 6 V across 4 Ω + 8 Ω = 12 Ω → 0.5 A.

NameDateTime takenScore ___ / 40
  1. 1.🧮 Two resistors in parallel give a total that is … (a) less than either one (b) more than either one (c) always zero (d) their sum
  2. 2.🧮 Adding another resistor in series makes the total resistance … (a) stay the same (b) zero (c) bigger (d) smaller
  3. 3.🧮 A 50 Ω resistor is joined in series with two equal 330 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  4. 4.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  5. 5.🧮 Resistors of 33 Ω, 150 Ω and 150 Ω are joined in series. What is the total resistance (in ohms)?
  6. 6.🧮 A 10 Ω resistor is joined in series with two equal 330 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  7. 7.🧮 Three equal 75 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  8. 8.🧮 Resistors of 10 Ω and 470 Ω are joined in series. What is the total resistance (in ohms)?
  9. 9.🧮 A 50 Ω resistor is joined in series with two equal 470 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  10. 10.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 Resistors of 150 Ω, 150 Ω, 22 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  12. 12.🧮 Five equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  13. 13.🧮 A 10 Ω resistor is joined in series with two equal 100 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  14. 14.🧮 Resistors of 50 Ω, 330 Ω, 470 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  15. 15.🧮 A 47 Ω resistor is joined in series with two equal 50 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  16. 16.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  17. 17.🧮 A 2.2 V battery is joined to 6 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  18. 18.🧮 Resistors of 22 Ω, 330 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  19. 19.🧮 A 50 Ω resistor is joined in series with two equal 220 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  20. 20.🧮 Three equal 150 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 A 330 Ω resistor is joined in series with two equal 220 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  23. 23.🧮 A 3 V battery is joined to 10 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  24. 24.🧮 Resistors of 68 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  25. 25.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  26. 26.🧮 A 10 Ω resistor is joined in series with two equal 50 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  27. 27.🧮 A 14 V battery is joined to 2 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  28. 28.🧮 A 1.8 V battery is joined to 6 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  29. 29.🧮 A 4 V battery is joined to 4 Ω and 4 Ω resistors in series. What current flows (in amperes)? =
  30. 30.🧮 A 4.25 V battery is joined to 12 Ω and 5 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 A 100 Ω resistor is joined in series with two equal 20 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  32. 32.🧮 Three equal 60 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 Five equal 125 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 Resistors of 10 Ω, 150 Ω, 10 Ω and 22 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  37. 37.🧮 A 20 Ω resistor is joined in series with two equal 100 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  38. 38.🧮 Resistors of 330 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  39. 39.🧮 Two equal 40 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Two equal 10 Ω resistors are joined in parallel. What is the total resistance (in ohms)?

Answer key

  1. less than either one
  2. bigger
  3. 215
  4. 100
  5. 333
  6. 175
  7. 25
  8. 480
  9. 285
  10. 165
  11. 372
  12. 10
  13. 60
  14. 1070
  15. 72
  16. 235
  17. 0.2
  18. 372
  19. 160
  20. 50
  21. 25
  22. 440
  23. 0.25
  24. 88
  25. 110
  26. 35
  27. 1
  28. 0.1
  29. 0.5
  30. 0.25
  31. 110
  32. 20
  33. 25
  34. 192
  35. 25
  36. 50
  37. 70
  38. 350
  39. 20
  40. 5

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids